package demo3;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 刘远望
 * Date: 2025-03-17
 * Time: 21:34
 */
public class Computer {
    public void open(){
        System.out.println("开机");
    }
    public void close(){
        System.out.println("关机");
    }
    public void useUsbDevice(USB usb){
        usb.openDevice();
        if(usb instanceof Mouse){
            Mouse mouse = (Mouse)usb;
            mouse.click();
        }else{
            KeyBoard keyBoard = (KeyBoard)usb;
            keyBoard.input();
        }
        usb.closeDevice();
    }
}
